CHANGELOG: update for 5.5-rc1

Signed-off-by: William Roberts <[email protected]>

Author: William Roberts

docs/CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 
 Starting with release 5.4, The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
-## 5.5-rc0 - 2022-12-05
+## 5.5-rc1 - 2022-12-12
 
 ### Added
   * tpm2_createek:
@@ -14,6 +14,9 @@ Starting with release 5.4, The format is based on [Keep a Changelog](http://keep
     - SM2 support to internal OSSL format key routines. Fixes --format
       flags for conversions.
 
+### Fixed:
+  * echo_tcti.py: set to use python3 named executable in shebang.
+
 ## 5.4 - 2022-12-05
 
 ### Added: